Explain with the help of two examples how certain plants have evolved morphological and chemical defenses against primary consumers such as cows and gosts.

Explanation

### Step-by-Step Solution:

1. **Introduction to Plant Defenses**:
- Plants have evolved various strategies to protect themselves from herbivores, which include morphological (physical) and chemical defenses. These adaptations help them survive against primary consumers like cows and goats.

2. **Example 1: Thorns in Cacti**:
- One prominent example of a morphological defense is the presence of thorns in cacti.
- Thorns serve as a physical barrier that deters herbivores from feeding on the plant.
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